# -*- coding: utf8 -*-
import os

base_dir = os.path.dirname(os.path.abspath(__file__))
data_file = base_dir + "/" + "gupiao.txt"
f = open(file=data_file, mode="r")
f.readline()
for line in f:
    if float(line.split(",")[2]) > 20:
        print(line, end='')

f.close()